docstr: Test if the component runs correctly.
docstr_tok: ["Test","if","the","component","runs","correctly","."]
code: def test_run(self, test_files_path):
      """
      Test if the component runs correctly.
      """
      bytestream = ByteStream.from_file_path(
          test_files_path / "txt" / "doc_3.txt"
      )
      bytestream.meta["file_path"] = str(
          test_files_path / "txt" / "doc_3.txt"
      )
      bytestream.meta["key"] = "value"
      files = [
          str(test_files_path / "txt" / "doc_1.txt"),
          test_files_path / "txt" / "doc_2.txt",
          bytestream,
      ]
      converter = TextFileToDocument()
      output = converter.run(sources=files)
      docs = output["documents"]
      assert len(docs) == 3
      assert "Some text for testing." in docs[0].content
      assert "This is a test line." in docs[1].content
      assert "That's yet another file!" in docs[2].content
      assert docs[0].meta["file_path"] == str(files[0])
      assert docs[1].meta["file_path"] == str(files[1])
      assert docs[2].meta == bytestream.meta
  
file_path: haystack/test/components/converters/test_textfile_to_document.py
imports: import logging
  from unittest.mock import patch
  from pathlib import Path
  import pytest
  from haystack.dataclasses import ByteStream
  from haystack.components.converters.txt import TextFileToDocument
label_desc: Use image node_id 1 for calling the TestTextfileToDocument obj's underlying member method code with example usage: obj.test_run(test_files_path) without return types